play transposition

Can you please describe the actual problem - give precise steps to reproduce whatever you think is a bug. Right now, looking at the score, it looks just fine. What do I need to do in order to see a problem? You previously mentioned something about changing instrument - a perfectly valid thing to do - but also mentioned something about messing with play transposition, which is *not* something you should ordinaril do. So please explain what you are actually trying to accomplish with the steps you list.

Please post additional information here rather than opening a new bug report. I'm closing the other one so the discussion can stay here.

The third part is currently Bb Cornet. If I change it to bass clarinet, then of course the notes go up an octave from where they are now - that is the correct transposition, because bass clarinet sounds an octave lower than cornet. A bass clarinet would have to play those pitches in order to yield the same sound. If you want the bass clarinet to play lwoer notes, don't lie to MuseScore about the correct transposition for the instrument - simply transpose the part down an octave (by selecting the contents of the staff - click first measure, press Shift+Ctrl+End to select to the end or scroll to the end then shift+click the last measure, then press Ctrl+down). It will be more playable, but will of course sound an octave lower than it currently does, because again, that's just how a bass clarinet is - it really *does* sound an octave lower than a cornet.

The reason the key changes when you tery messing with the play transposition is that the part is currently transposed correctly: an octave *plus* a major second. You are changing the transposition to an *incorrect* value - only an octave. This changes the key from G (correct) to F (incorrect). The piece is actually in F (as you can see if you turn on "Concert Pitch"), and for any Bb instrument like bass clarinet, that translated to the key of G. When you lied to MuseScore about the transposition - telling it the transposition was an octave rather than a major second plus an octave - it changed the key to match. Again, this is completely correct: *if* bass clarinet transposed by only an octave instead of an octave plus a major second, then F *would* be the right key.

The reason the notes go up when you specify down as the play transposition and vice versa is that this field does what it says: it specifies the transposition to be applied *on playback*. When you tell MsueScore an instrument has a play transposition of an octave up, you are telling it that it sounds an octave higher than wirtten (which is not true, but it is what you are saying) so MuseScore dutifully transposes the written music down an octave so that on playback it will sound correct.

So everything you are describing is correct behavior.

If you have further questions on how MuseScore works, or how transposing instruments work in general, please use the support forum. You might start, however, by doing some research on transposing instruments.